Scientists, students and volunteers are descending on the Golden Gate National Recreation Area this Friday and Saturday to record as many plant and animal species as possible in 24 hours. It’s part of an event called a BioBlitz.

The National Geographic Society has been organizing annual BioBlitz events at national parks across the country, as a lead up to the National Park Service’s centennial celebration in 2016. The goal is to transform park visitors into citizen scientists, as they help to observe and count the parks’ biodiversity.

A bobcat. (Jessica Weinberg/Golden Gate National Parks Conservancy)

“One of the most important things for the BioBlitz is to reach out and engage the citizens that live around the park lands in a different way,” says National Park Service spokeswoman Alexandra Picavet. “Students will get a closer look at a park they may already enjoy while riding their bikes or walking their dog.”

Three hundred scientists will lead teams throughout the Golden Gate National Recreation Area, from Muir Woods to Fort Point and the Marin Headlands. More than 4700 volunteers are expected to take part in this year’s BioBlitz, including 1400 students from the San Francisco Unified School District. They’ll be searching for all signs of life, from microscopic bacteria to bobcats. The counting starts at noon on Friday.

“We have entomologists coming from UC Davis who are going to do a lot of work in the newest part of the Golden Gate National Recreation Area, and that’s Rancho Corral de Tierra,” says Picavet. “They’ll be looking for beetles, and for ticks, and for mosquitoes and all signs of insect life down there.”

(Jessica Weinberg/Golden Gate National Parks Conservancy)

The citizen scientists will use a smart phone app called iNaturalist to record, photograph and map their findings, which will be added to park service databases.

The evolution of technology has allowed more people to get involved with research, says Marie Studer, with the Encyclopedia of Life, which has partnered with iNaturalist. But she says it’s not just the technology that’s fueling events like BioBlitz. It’s a growing concern about species loss.

“People are recognizing that we’re in a biodiversity crisis,” says Studer. “It’s considered that we’re in the sixth mass extinction on the planet. We’re losing species at a very rapid rate before we’re able to recognize and catalog all that we know about.”

A West Coast lady (Will Elder/Golden Gate National Parks Conservancy)

The BioBlitz species counts are all booked up with volunteers. But members of the general public are welcome to attend the Biodiversity Festival at Crissy Field on Friday and Saturday, starting at 9am. The family-friendly event will include music from the Banana Slugs Band, photography workshops, and live animal demonstrations.

As the festival wraps up on Saturday afternoon, scientists will return from the field to share stories of what they found, and present a grand tally of all the plants, animals and bacteria they were able to count during the 24-hour BioBlitz.

BioBlitz: A 24-Hour Quest to Count Plants and Animals in the Golden Gate National Parks 27 March,2014Erika Kelly

Support of KQED Science is provided by HopeLab, S. D. Bechtel, Jr. Foundation, The Dirk and Charlene Kabcenell Foundation, The Vadasz Family Foundation, John S. and James L. Knight Foundation, Gordon and Betty Moore Foundation, Smart Family Foundation and the members of KQED.